fix: inconsistent casing in items cache

Author: isc-pbarton

Diff for: CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Popping from stash is more responsive (#687)
 - Favorites links for Git pages now works on recent IRIS versions (#734)
 - IDE editing of decomposed productions now properly handles adds and deletes (#643)
+- extensions in item cache are consistently upper-case, so "export all" doesn't duplicate work (#727)
 
 ### Fixed
 - Fixed error running Import All when Git settings file does not exist (#713)

Diff for: cls/SourceControl/Git/Utils.cls

@@ -1270,7 +1270,7 @@ ClassMethod NormalizeInternalName(ByRef name As %String, Output fromWebApp As %B
     set type = ..Type(.name)
 
     if ($extract(name) '= "/") && (type'="csp") {
-        quit $piece(name,".",1,*-1)_"."_$zconvert($piece(name,".",*),"U")
+        quit ..NormalizeExtension(name)
     }
 
     if (name [ "/") && (type = "csp") {
@@ -1293,7 +1293,7 @@ ClassMethod NormalizeExtension(name As %String) As %String
 {
     #dim extension = $piece(name, ".", $length(name, "."))
     if $length(extension) <= 3 {
-        set $piece(name, ".", $length(name, ".")) = $zconvert(extension, "L")
+        set $piece(name, ".", $length(name, ".")) = $zconvert(extension, "U")
     }
     quit name
 }